Stones

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Stones last won the day on October 8 2017

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  1. Interesting. We likewise had a few dead insects in the core, but otherwise the water was pretty clear when washing out. The biggest issues were the mould growth, and I can only attribute this to water condensation sitting at the base of the core before there is enough to drain out. How encrusted with dust was the extract fan (our supply fan was clean)? Perhaps our damper marine climate has something to do with it.
  2. Roughly speaking then your duct was about 1/3 the cost of the slightly larger bore stuff many of have used. Well done! From what you say similar 1/3 - 1/2 the cost for the other comparable parts?
  3. I can certainly understand why they are striking, for the reasons alluded to earlier. Our politicians are far from blameless in all of this. Governments of all colours have introduced changes that have weakened / destroyed pension provision, purely for short term gain. Taxing pension fund surpluses in excess of 105% liability (Conservative) saw companies taking pension contribution holidays. Removing the dividend tax credit (Labour) saw another reduction in income. Forcing companies to put pension liabilities on their balance sheets another. So the government having benefited from increased tax take, and companies from contribution savings, they then find themselves when investment values dip, with a large notional deficit which they seek to de-risk / offload. They close final salary schemes and open DC schemes, but in doing so take the opportunity to lower company contributions. Government has been complicit in this, all the while MPs secure on triple gold plated pensions, which were the last to be reformed (and for which they got a pay rise to compensate for). I know the local government scheme is funded, but many other public sector ones are not, and operate a transfer payment system. Of course, when contributions exceeded the amount being paid out, nobody moaned at the lower taxes / higher level of public spending this subsidised. I would agree with @AliG that revised thinking is needed to secure a sustainable retirement income for everyone, and that hard choices are going to have to be made by politicians. My sister is a GP, and remarked once that the reason people are living longer is not done solely to medical advances, but that the population in general has been able to retire earlier / at a relatively young age. Her view was that increasing retirement age would lead to a reduction in life expectancy (perhaps what government wants?).
  4. How many metres of duct have you used? How have you secured / fitted the ducts to room terminal plenums? The steel room terminals are nice. I used them in all of our previous builds and they are a lot less intrusive / better looking than the plastic ones I currently have. I've still got one spare somewhere, will have to dig it out and see how good a fit it would be with our terminal plenums.
  5. Missing Post - MBC Review

    There has been speculation regarding a review recently submitted by a member, and the reasons for it being hidden. The forum should reasonably allow suppliers the right of reply to any review, and in circumstances where a commercial dispute may exist, such suppliers would only be able to respond on the specifics of a review or dispute, if the identity of the (review) author / all parties was confirmed. If, following supplier representations, the identity of the (review) author / all parties cannot be confirmed, the FMG would have no alternative other than to remove the review from public access. The forum remains open to hosting constructive feedback and reviews, however members need to understand that they are responsible for their own content. Disputes between individuals and named suppliers should be not be published on this forum. This is entirely in line with our Terms and Conditions, which members agree to abide by when using the forum. No further discussion will be entered into on this matter and any further posts regarding this matter will be hidden or deleted. An update to our Terms and Conditions will be published shortly, and all members will be required to accept these if they wish to continue using the forum. The FMG once again repeats that any qualifying forum member can apply for membership of the FMG to take part in decision making and the ongoing management of the forum. For and on behalf of the FMG.
  6. I don't think there is a right or wrong answer. All our previous installations used a main duct with branches off to individual rooms. Ducting was a mixture of plastic and flexible. I know many will be some sharp intakes of breath that I used flexible duct, but you know what, it worked. The smaller bore semi rigid stuff I used in the current house was a lot easier to install, but I do think its the reason I've needed to install a (large homemade) silencer. My neighbour has just installed a system using main duct runs of polystyrene duct with branches off, a silencer at every room outlet / inlet. It's yet to be commissioned but it will be interesting to see how that performs noise wise.
  7. I think I'll drop Vent Axia a line to see what they say about the mould growth (and the front cover fixings). I'm not overly concerned by its presence but it would be interesting to hear what they have to say and if there is anything I can do about it. Quite a useful step by step here (I really should have taken pictures myself):
  8. Smart meters and flexible pricing sound great in theory but there will be only one overall winner, and it won't be consumers. A small % of consumers will undoubtedly be able to save money by changing habits and consumption to suit the cheapest tariff / times. Most however, will not and will see increasing bills as their peak consumption is priced at premium levels.
  9. @JamesP I built a home made silencer and fitted it between the unit and supply manifold. There's a post on my blog about @Declan52 how long after commissioning did you leave it before first clean of the core?
  10. Only out going extracted air. The heat exchange core fins are housed in a hexagonal shaped body, so there is a small surface area where fins meet body where water can sit before presumably there is enough water to force it over that edge and drain away. Like a shower therefore, it is the place that remains damp or water is always present. At most the mould growth covered around 5 mm or so around the body / fin junction.
  11. It wasn't the whole core, but the base of the fins where water / condensation drains out. I would liken it to the growth in a shower at the junction between wall and tray. From a health point of view, I'm relaxed about it as the growth is at the exit point of the extract side of the core meaning it doesn't mix with the incoming fresh air. @Declan52 did you see any mould growth in the core of your unit when servicing?
  12. I'm reasonably happy with it. The summer bypass and humidity functions work well, and as @Declan52 says, it just ticks away. I've had MVHR in 4 houses now, but this is the first I've had to fit a silencer. Not sure if its the MVHR or type of ducting I used this time (semi rigid) around. Glad I'm not the only one who thinks the front cover is poor. The previous MVHR units I had, the front cover was hinged at the bottom and secured with two quick release catches - really simple and really effective. @Declan52 did you simply swap out the screws or to more inside the unit to secure the cover?
  13. Missing Post - MBC Review

    The topic is currently hidden on the basis that it potentially breaches 6.5 and 6.7 of the BuildHub Terms and Conditions.
  14. The topic is currently hidden on the basis that it potentially breaches 6.5 and 6.7 of the BuildHub Terms and Conditions.
  15. One year on from first install, I set about servicing my MVHR today. Aside from cleaning and replacing the filters, this is the first action I've undertaken with the MVHR. First off, the front cover is secured in place by a series of screws with a mortorq head. Quite why they have used these rather than the Philips head used elsewhere, I'm not quite sure. Fortunately, I had the appropriate bit, but unfortunately, the screw heads are that soft that one of them stripped. Gravity came, in a way, to the rescue. Whilst I was considering how to proceed, the cover fell forward and broke the flimsy plastic fixing through which the screw secures the cover to the body. So, with front cover now off, I pulled out the heat exchange core ( its a very snug fit so needs a firm pull). I anticipated that there would be some residual water / condensation in the core as it wasn't long after morning shower time. Best advice is therefore to keep the core level until you are somewhere safe to drain any water out. I washed out the core using the shower, and there was a bit of dust / gunk etc that came out of it. To dry, I left it outside and the wind did the rest. Aside from the water / condensation in the core, there was some black mould growth where any water would normally drain out of the core into the condensate drain. Bleach and a toothbrush dealt with that particular issue. Having dealt with the core, I wiped down all of the internal MVHR core housing and duct outlet surfaces. Generally speaking they were pretty clean. The summer bypass, which consists of plastic louvered fins, required a bit more cleaning, as the fins all had a coating of dust that had stuck on. Likewise, the extract fan impeller blades were covered in a coating of dust that had stuck on. I'm guessing that in both cases, the moisture present in the extracted air made the fins and impeller blades damp enough for the dust to stick such that it wouldn't simply brush off. The dust deposit did however, wipe off fairly easily. Finally, I checked the condensate drain, making sure it was free of blockages. After cleaning the two general filters, I slotted the heat exchange core back in, replaced the filters then refitted the front panel. Fortunately, despite the damage described earlier, there were sufficient screws left to secure the front panel and seal the heat exchange area. In summary, easy enough to self service, just be wary of the screws securing the front panel.